Just go to any of your contacts and select buzz
from menu.and buzz him/her.for example,h4v0ce- is in my contact list
and i try to Buzz him if it says ,sorry,you are not able to Buzz
h4v0ce-.it means that h4v0ce- deleted me and if i'm still in his
contact list.it'll say,do you want to Buzz h4v0ce-?